guillotine on defense

I don't usually push a defender in aw to sp3, but recently I pushed Guilly to sp3 with Cap WW2. I hadn't taken any damage to that point, and she was nearly dead with 2-3 souls attached. However, when she activated her sp3, it took 22% of Cap's health, when it should have been at most 6%. I have, on occasion, done the same in arenas, and the correct amount of damage is taken. Is there another reason besides 'because Kabam'?

I am curious why you think you should know how much damage it will do. The node you describe has 150% increased attack, plus the mastery setup changes from person to person, so they could have masteries that increase attack. A jump from 6% to 22% from arena to a boosted node sounds very legitimate.

I know Guilly's specials, she's my top champ, so I know how much damage she should be doing from her sp3.
Her sp3 reads:
La Fleur du Mal consumes all available Souls and deals 2% of the opponent's health in direct damage per soul consumed.

As for rank, both Cap and Guilly were 4*, Cap is 5/50, and based on stats, Guilly likely was as well.

I know Guilly's specials, she's my top champ, so I know how much damage she should be doing from her sp3.
Her sp3 reads:
La Fleur du Mal consumes all available Souls and deals 2% of the opponent's health in direct damage per soul consumed.

As for rank, both Cap and Guilly were 4*, Cap is 5/50, and based on stats, Guilly likely was as well.

So what you are saying is that she won't do any damage on SP3 unless she has souls?

I have a 4/40 4* Guilly that is has been at sig 60 for awhile now. I know quite a lot about her as well, that damage output for pushing her to her SP3 should be reasonable. Also it's Kabam, what do you think? They punish you if you push any defending champ to a SP3 anyway.

Wouldn't be a surprise if she did that much damage to you since you pushed her to her SP3.